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杂交粳稻自1971年开始研究,1975年实现三系配套.1980年经省品种审定委员会正式命名并推广的“辽优1号”(黎明A×C_(57)),黎明A是用我省推广的水稻良种“黎明”转育成的不育系,恢复系C_(57)是通过籼粳交和复交架桥办法人工制成的,当年面积达69万亩,一般比当地良种增产一、二成,为国家增产稻谷约7千万斤.去年,营口地区种植
The hybrid japonica rice has been studied since 1971 and has been complemented by three lines in 1975. In 1980, “Liaoyou No. 1” (Dawn A × C_ (57)) officially named and promoted by the Provincial Variety Approval Committee, Dawn A Of the hybrid rice “dawn” into a sterile line, the restorer line C_ (57) is made through the cross between the indica and japonica cross and bridge method artificial, when the area of 69 hectares, generally higher than the local varieties of one or two into , About 7 million kilograms of rice for the country to increase production last year, Yingkou area planting